We only ship plain binary bios images in the QEMU source. With Spike machine that uses ELF images as the default bios, running QEMU test will complain hence let's suppress the error report for QEMU testing. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Anup Patel <anup@brainfault.org> Message-Id: <1588348254-7241-6-git-send-email-bmeng.cn@gmail.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
181 lines
6.3 KiB
C
181 lines
6.3 KiB
C
/*
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* QEMU RISC-V Boot Helper
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*
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* Copyright (c) 2017 SiFive, Inc.
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* Copyright (c) 2019 Alistair Francis <alistair.francis@wdc.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2 or later, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "qemu-common.h"
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#include "qemu/units.h"
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#include "qemu/error-report.h"
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#include "exec/cpu-defs.h"
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#include "hw/boards.h"
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#include "hw/loader.h"
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#include "hw/riscv/boot.h"
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#include "elf.h"
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#include "sysemu/qtest.h"
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#if defined(TARGET_RISCV32)
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# define KERNEL_BOOT_ADDRESS 0x80400000
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#else
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# define KERNEL_BOOT_ADDRESS 0x80200000
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#endif
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void riscv_find_and_load_firmware(MachineState *machine,
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const char *default_machine_firmware,
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hwaddr firmware_load_addr,
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symbol_fn_t sym_cb)
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{
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char *firmware_filename = NULL;
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if (!machine->firmware) {
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/*
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* The user didn't specify -bios.
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* At the moment we default to loading nothing when this hapens.
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* In the future this defaul will change to loading the prebuilt
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* OpenSBI firmware. Let's warn the user and then continue.
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*/
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if (!qtest_enabled()) {
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warn_report("No -bios option specified. Not loading a firmware.");
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warn_report("This default will change in a future QEMU release. " \
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"Please use the -bios option to avoid breakages when "\
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"this happens.");
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warn_report("See QEMU's deprecation documentation for details.");
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}
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return;
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}
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if (!strcmp(machine->firmware, "default")) {
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/*
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* The user has specified "-bios default". That means we are going to
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* load the OpenSBI binary included in the QEMU source.
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*
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* We can't load the binary by default as it will break existing users
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* as users are already loading their own firmware.
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*
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* Let's try to get everyone to specify the -bios option at all times,
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* so then in the future we can make "-bios default" the default option
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* if no -bios option is set without breaking anything.
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*/
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firmware_filename = riscv_find_firmware(default_machine_firmware);
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} else if (strcmp(machine->firmware, "none")) {
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firmware_filename = riscv_find_firmware(machine->firmware);
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}
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if (firmware_filename) {
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/* If not "none" load the firmware */
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riscv_load_firmware(firmware_filename, firmware_load_addr, sym_cb);
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g_free(firmware_filename);
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}
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}
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char *riscv_find_firmware(const char *firmware_filename)
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{
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char *filename;
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filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, firmware_filename);
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if (filename == NULL) {
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if (!qtest_enabled()) {
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/*
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* We only ship plain binary bios images in the QEMU source.
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* With Spike machine that uses ELF images as the default bios,
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* running QEMU test will complain hence let's suppress the error
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* report for QEMU testing.
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*/
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error_report("Unable to load the RISC-V firmware \"%s\"",
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firmware_filename);
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exit(1);
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}
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}
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return filename;
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}
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target_ulong riscv_load_firmware(const char *firmware_filename,
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hwaddr firmware_load_addr,
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symbol_fn_t sym_cb)
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{
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uint64_t firmware_entry, firmware_start, firmware_end;
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if (load_elf_ram_sym(firmware_filename, NULL, NULL, NULL,
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&firmware_entry, &firmware_start, &firmware_end, NULL,
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0, EM_RISCV, 1, 0, NULL, true, sym_cb) > 0) {
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return firmware_entry;
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}
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if (load_image_targphys_as(firmware_filename, firmware_load_addr,
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ram_size, NULL) > 0) {
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return firmware_load_addr;
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}
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error_report("could not load firmware '%s'", firmware_filename);
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exit(1);
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}
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target_ulong riscv_load_kernel(const char *kernel_filename, symbol_fn_t sym_cb)
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{
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uint64_t kernel_entry, kernel_high;
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if (load_elf_ram_sym(kernel_filename, NULL, NULL, NULL,
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&kernel_entry, NULL, &kernel_high, NULL, 0,
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EM_RISCV, 1, 0, NULL, true, sym_cb) > 0) {
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return kernel_entry;
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}
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if (load_uimage_as(kernel_filename, &kernel_entry, NULL, NULL,
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NULL, NULL, NULL) > 0) {
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return kernel_entry;
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}
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if (load_image_targphys_as(kernel_filename, KERNEL_BOOT_ADDRESS,
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ram_size, NULL) > 0) {
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return KERNEL_BOOT_ADDRESS;
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}
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error_report("could not load kernel '%s'", kernel_filename);
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exit(1);
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}
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hwaddr riscv_load_initrd(const char *filename, uint64_t mem_size,
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uint64_t kernel_entry, hwaddr *start)
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{
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int size;
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/*
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* We want to put the initrd far enough into RAM that when the
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* kernel is uncompressed it will not clobber the initrd. However
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* on boards without much RAM we must ensure that we still leave
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* enough room for a decent sized initrd, and on boards with large
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* amounts of RAM we must avoid the initrd being so far up in RAM
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* that it is outside lowmem and inaccessible to the kernel.
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* So for boards with less than 256MB of RAM we put the initrd
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* halfway into RAM, and for boards with 256MB of RAM or more we put
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* the initrd at 128MB.
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*/
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*start = kernel_entry + MIN(mem_size / 2, 128 * MiB);
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size = load_ramdisk(filename, *start, mem_size - *start);
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if (size == -1) {
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size = load_image_targphys(filename, *start, mem_size - *start);
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if (size == -1) {
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error_report("could not load ramdisk '%s'", filename);
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exit(1);
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}
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}
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return *start + size;
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}
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